Publications associées à Équations de Navier-Stokes

Quantitative convergence rates for scaling limit of SPDEs with transport noise

We consider on the torus the scaling limit of stochastic 2D (inviscid) fluid dynamics equations with transport noise to deterministic viscous equations. Quantitative estimates on the convergence rates are provided by combining analytic and probabilistic ar ...

Academic Press Inc Elsevier Science2024

SPACE-TIME REDUCED BASIS METHODS FOR PARAMETRIZED UNSTEADY STOKES EQUATIONS

Simone Deparis, Riccardo Tenderini, Nicholas Mueller

In this work, we analyze space-time reduced basis methods for the efficient numerical simulation of haemodynamics in arteries. The classical formulation of the reduced basis (RB) method features dimensionality reduction in space, while finite difference sc ...

Philadelphia2024

Noise-induced transitions past the onset of a steady symmetry-breaking bifurcation: The case of the sudden expansion

François Gallaire, Edouard Boujo, Yves-Marie François Ducimetière

We consider fluid flows, governed by the Navier-Stokes equations, subject to a steady symmetry-breaking bifurcation and forced by a weak noise acting on a slow timescale. By generalizing the multiple-scale weakly nonlinear expansion technique employed in t ...

2024

Mean-field transport equations and energy theorem for plasma edge turbulent transport

Reinart Andreas J. Coosemans

This paper establishes a mean-field equation set and an energy theorem to provide a theoretical basis in view of the development of self-consistent, physics-based turbulent transport models for mean-field transport codes. A rigorous averaging procedure ide ...

Cambridge Univ Press2024

Stability of a liquid layer draining around a horizontal cylinder: Interplay of capillary and gravity forces

François Gallaire, Shahab Eghbali, Simeon Vladimirov Djambov

We study the drainage of a viscous liquid film coating the outside of a solid horizontal cylinder, where gravity acts vertically. We focus on the limit of large Ohnesorge numbers Oh, where inertia is negligible compared to viscous effects. We first study t ...

Amer Physical Soc2024

A cut-cell method for the numerical simulation of 3D multiphase flows with strong interfacial effects

Marco Picasso, Alexandre Caboussat, Alexandre Masserey, Julien Hess

We present a numerical model for the approximation of multiphase flows with free surfaces and strong interfacial effects. The model relies on the multiphase incompressible Navier-Stokes equations, and includes surface tension effects on the interfaces betw ...

Academic Press Inc Elsevier Science2024

Residual-based attention in physics-informed neural networks

Nikolaos Stergiopoulos, Sokratis Anagnostopoulos

Driven by the need for more efficient and seamless integration of physical models and data, physics -informed neural networks (PINNs) have seen a surge of interest in recent years. However, ensuring the reliability of their convergence and accuracy remains ...

Lausanne2024

Anisotropic Adaptive Finite Elements for a p-Laplacian Problem

Marco Picasso, Paride Passelli

The p-Laplacian problem -del & sdot; ((mu + |del u|(p-2))del u) = f is considered, where mu is a given positive number. An anisotropic a posteriori residual-based error estimator is presented. The error estimator is shown to be equivalent, up to higher ord ...

Walter De Gruyter Gmbh2024

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Équations de Navier-Stokes

Anomalous dissipation and other non-smooth phenomena in fluids

Quantitative convergence rates for scaling limit of SPDEs with transport noise

SPACE-TIME REDUCED BASIS METHODS FOR PARAMETRIZED UNSTEADY STOKES EQUATIONS

Noise-induced transitions past the onset of a steady symmetry-breaking bifurcation: The case of the sudden expansion

Mean-field transport equations and energy theorem for plasma edge turbulent transport

Adaptive Finite Elements with Large Aspect Ratio. Application to Aluminium Electrolysis

Stability of a liquid layer draining around a horizontal cylinder: Interplay of capillary and gravity forces

A cut-cell method for the numerical simulation of 3D multiphase flows with strong interfacial effects

Residual-based attention in physics-informed neural networks

Anisotropic Adaptive Finite Elements for a p-Laplacian Problem

Graph Chatbot

Chattez avec Graph Search

Anomalous dissipation and other non-smooth phenomena in fluids

Quantitative convergence rates for scaling limit of SPDEs with transport noise

Mean-field transport equations and energy theorem for plasma edge turbulent transport

Noise-induced transitions past the onset of a steady symmetry-breaking bifurcation: The case of the sudden expansion

Adaptive Finite Elements with Large Aspect Ratio. Application to Aluminium Electrolysis

SPACE-TIME REDUCED BASIS METHODS FOR PARAMETRIZED UNSTEADY STOKES EQUATIONS

A cut-cell method for the numerical simulation of 3D multiphase flows with strong interfacial effects

Residual-based attention in physics-informed neural networks

Stability of a liquid layer draining around a horizontal cylinder: Interplay of capillary and gravity forces

Anisotropic Adaptive Finite Elements for a p-Laplacian Problem